Earlier quoted context omitted.
Mutt doesn't support retrieving mail very well, but you can use sync programs (getmail, offlineimap, isync, exchange2mbox) to create local mailboxes and make mutt use the local mailbox directory instead. you can send email using external programs (local smtp server and openxchange for exchange). Mutt is not a traditional mail client, it is more of a glue between multiple programs so you can have one interface for all…
If Mutt is not a traditional mail client , then what is? heirloom-mailx? I read my mail with less. That's a nontraditional mail client.
rm -rf *
Disclaimer: For the Unix impaired, this is an "expert only" utility. I am not responsible for the loss of all the files in your home directory should you attempt to use it.